Title: Distinction of 2-photon absorption from other nonlinear loss mechanisms by phase-conjugate interferometry
Authors: Tackx, P ×
Kauranen, M
Persoons, Andre #
Issue Date: Jan-1994
Publisher: Amer inst physics
Series Title: Applied Physics Letters vol:65 issue:3 pages:280-282
Abstract: We show that phase-conjugate interferometry is a measuring technique for third-order optical nonlinearities that can distinguish two-photon absorption from other nonlinear loss mechanisms. For the case of 3,3'-diethyloxadicarbocyanine iodide at 1064 nm, the nonlinear loss is dominated by linear absorption from the two-photon excited state. We observe a highly nonlinear absorption process in solutions of 4-methoxy-4'-nitrostilbene at 532 nm and show that it is due to a more complicated loss mechanism. This mechanism could have applications in optical limiting.
ISSN: 0003-6951
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Molecular Imaging and Photonics
× corresponding author
# (joint) last author

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